Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da5969ba6bbb930…

MALICIOUS

PDF

70.6 KB Created: 2020-11-09 21:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fbf28b27808faee535a5b4363a65fcc4 SHA-1: 7ba7df49fdf8200d497b3fb40edac02006fb7211 SHA-256: 7da5969ba6bbb930f40b698d5d1e76528eba5ecc5ec6c594d6a85da07b913964
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'unblocked run 2 game', suggesting a lure. An external URI pointing to 'traffnew.ru' was extracted, likely serving as the malicious payload delivery URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffnew.ru/123?keyword=unblocked+run+2+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375541/normal_5f8d7e293d985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f883ab2d94b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_5fa09e7a59665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f93ca762fea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_5f909f9999f4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_5fa9749d0cc4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gapivegek/summoners_war_fire_rift_beast_team.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/96528664919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca9be41-dabe-4dcf-af05-29d229bff580/galaway_wifi_extender_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9951c0be-4e17-46e5-95ed-b6ba26c8427b/descargar_con_mega_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aec699b-e68d-4189-b8f0-7ecf30201a04/porovifowura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a35859d-99aa-4c1a-a0d7-ed36fd738666/tevixoxulodezumidukozisi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 5408 bytes
SHA-256: 1d0ccc67707bfff7311014ee4d94feadceb94e605f85f0d397c504cb16043684
font_01_sfnt_off0000e971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE971 10796 bytes
SHA-256: 10fbbbd05358d6126c3117b5a39b7962ba4b8449e6a5493eae26e3010b97e76e

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